CVE-2026-26151

FAQ

According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H), and some loss of integrity (I:L), but no loss of availability (A:N). What does that mean for this vulnerability?

An attacker who successfully exploited this vulnerability could view sensitive information, (Confidentiality), and make some changes to disclosed information (Integrity), but they would not be able to affect Availability.

How could an attacker exploit the vulnerability?

In an email or instant message attack scenario, the attacker could send the targeted user a specially crafted file that is designed to exploit the vulnerability.

In any case an attacker would have no way to force a user to view attacker-controlled content. Instead, an attacker would have to convince a user to take action. For example, an attacker could entice a user to either click a link that directs the user to the attacker's site or send a malicious attachment.

Where can I finder more information about this update

Starting with the April 2026 security update, the Remote Desktop Connection app shows new security warnings when you open RDP files. This article explains what these warnings mean and how to respond to them safely: https://go.microsoft.com/fwlink/?linkid=2347342